When I'm walking around I like to carry my camera around my shoulder. When I'm shooting I like to wrap my strap around my hand so I don't accidentally drop it. I don't like wearing the camera around my neck 'cause it hurts.

I would just buy a hand grip but I would still need to carry the camera around my shoulder if I need to use both of my hands for something.

it doesnt combine the 2 but check out the black rapid straps.. they are over the shoulder and give you a fast natural motion to get up to your eye for the shot while still keeping your camera secure around your shoulder. they are also make carrying the camera extremely comfortable over long periods of time without the camera sitting uncomfortably against your body or bouncing around continually as you walk.